An embodiment is a cyclic olefin semiconductor package. Further an embodiment is a combination of a cyclic olefin monomer and a ruthenium-based catalyst that is stable at approximately room temperature and humidity for extended storage life and pot life, and that can be screen printed or valve/jet deposited.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method of semiconductor packaging comprising: mixing a cyclic olefin monomer with a ruthenium-based catalyst; depositing the mixture of cyclic olefin monomer and ruthenium-based catalyst on a substrate including a semiconductor device; heating the mixture of cyclic olefin monomer and ruthenium-based catalyst to form a cyclic olefin package on the semiconductor device.
2. The method of claim 1 , heating the mixture of cyclic olefin monomer and ruthenium-based catalyst further comprising: initiating a ring opening metathesis polymerization.
3. The method of claim 2 , depositing the mixture of cyclic olefin monomer and ruthenium-based catalyst further comprising screen printing the mixture.
4. The method of claim 3 , depositing the mixture of cyclic olefin monomer and ruthenium-based catalyst further comprising valve depositing the mixture.
5. The method of claim 4 , depositing the mixture of cyclic olefin monomer and ruthenium-based catalyst further comprising jet depositing the mixture.
6. The method of claim 2 wherein the cyclic olefin monomer comprises a compound selected from the group consisting of dicyclopentadiene, substituted dicyclopentadiene, norbornene, substituted norbornene, cyclooctene, substituted cyclooctene, and combinations thereof.
7. The method of claim 2 wherein the ruthenium-based catalyst has a formula of RuX 2 L 2 CR1R2 for which: X includes a halogen or alkoxide group, L is a member of the imidazol-2-ylidene ligand group with N-substituents, R1 includes a hydrogen, an aryl group, a branched alkyl group, or a linear alkyl group; and R2 is a imidazol-2-ylidene ring substituent and includes a hydrogen, an aryl group, a branched alkyl group, or a linear alkyl group.
8. The method of claim 7 wherein C3 and C4 of the R2 imidazol-2-ylidene ring is substituted with groups selected from the group consisting of hydrogen, aryl, ester, carboxylic acid, amine, amide, a linear hydrocarbon, and a branched hydrocarbon, and a combination thereof.
9. The method of claim 1 , heating the mixture of cyclic olefin monomer and ruthenium-based catalyst further comprising: activating the polymerization of the mixture of cyclic olefin monomer and ruthenium-based catalyst by maintaining the mixture of cyclic olefin monomer and ruthenium-based catalyst at approximately between 40° C. and 250° C. for approximately between 1 and 6 hours.
10. A method comprising: depositing a mixture of cyclic olefin monomer and ruthenium-based catalyst on a substrate including a semiconductor device; initiating a ring opening metathesis polymerization in the mixture of cyclic olefin monomer and ruthenium-based catalyst to form a cyclic olefin package on the semiconductor device.
11. The method of claim 10 wherein the cyclic olefin monomer comprises a compound selected from the group consisting of dicyclopentadiene, substituted dicyclopentadiene, norbornene, substituted norbornene, cyclooctene, substituted cyclooctene, and a combination thereof.
12. The method of claim 10 wherein the ruthenium-based catalyst has a formula of RuX 2 L 2 CR1R2 for which: X includes a halogen or alkoxide group, L is a member of the imidazol-2-ylidene ligand group with N-substituents, R1 includes a hydrogen, an aryl group, a branched alkyl group, or a linear alkyl group; and R2 is a imidazol-2-ylidene ring substituent and includes a hydrogen, an aryl group, a branched alkyl group, or a linear alkyl group.
13. The method of claim 12 wherein C3 and C4 of the R2 imidazol-2-ylidene ring is substituted with groups selected from the group consisting of hydrogen, aryl, ester, carboxylic acid, amine, amide, a linear hydrocarbon, and a branched hydrocarbon, and a combination thereof.
14. The method of claim 10 , initiating a ring opening metathesis polymerization in the mixture of cyclic olefin monomer and ruthenium-based catalyst further comprising: heating the mixture of cyclic olefin monomer and ruthenium-based catalyst to a temperature approximately between 40° C. and 250° C.; and maintaining the temperature for approximately between 1 and 6 hours.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
October 29, 2004
May 15, 2007
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